Resultados de la búsqueda
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Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution
Abstract: The incorporation of “effective sample size” (ESS) in integrated assessments is an ... approximate but simple way of modelling the distribution of catch-at-age or catch-at-length frequencies using ... frequencies. The ESS applied within the definition of the negative log-likelihood contribution to the ... -length frequency data relative to the other types of data used in integrated assessments of toothfish ...
Meeting Document : WG-SAM-07/7 : Autor(es): S.G. Candy (Australia)
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Zonal structure of zooplankton communities in the Southern Ocean south of Australia: results from a 2150 km continuous plankton recorder transect
Abstract: The Southern Ocean south of Australia is oceanographically complex, being characterized ... by double branches of the Sub-Antarctic Front (SAF), Polar Front (PF) and Southern Antarctic ... Circumpolar Current (SACCF), in addition to the Southern Boundary (SB) of the ACC. From 25 February to 3 March ... and 66.36°S, crossing each of these frontal zones. Surface temperature, salinity, and fluorescence ...
Meeting Document : WS-BSO-07/P6 : Autor(es): Hunt, B.P.V. and G. Hosie
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Monitoring of relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, in years 2000 to 2003
Abstract: The monitoring program of demersal fish at inshore sites of the South Shetland Islands ... has continued in Potter Cove from 2000 to 2003, covering a continuous sampling period of twenty years ... net catches of fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in ... 1983-1999, is still evident. At Potter Cove, higher catches of N. rossii were obtained from 1991 to ...
Meeting Document : WG-FSA-03/89 : Autor(es): E. Barrera-Oro, E. Marschoff, R. Casaux and B. Gonzalez (Argentina)
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On the state of Champsocephalus gunnari stock in Subarea 48.3 and methods of its assessment
2000 showed clearly a necessity to revise the methods of icefish (which is near-bottom and pelagic fish ... species) biomass assessment based on the results of bottom trawl surveys. A question on unreliability of ... stock assessment was repeatedly raised on the meetings of Working Group on Fish Stock Assessment (WGFSA ... ) both during the period of the icefish fishery in 1980s and after its ceasing in 1990s. In all cases, a ...
Meeting Document : WG-FSA-00/45 : Autor(es): K. Shust, V. Senioukov, P. Gasiukov and A. Kozlov (Russia)
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CCAMLR spatial management GIS: potential applications for informing the development of a representative system of MPAs
GIS facilitates easy mapping of CCAMLR’s spatial management framework and associated conservation ... measures, and standardises this information in terms of projection and coastline position. Access to ... spatially derived parameters through the database may be useful in the design and implementation of ... protected areas as part of the development of a representative system of Antarctic marine protected areas ...
Meeting Document : WS-MPA-11/20 : Autor(es): S.M. Grant, S.L. Hill and P.T. Fretwell (UK)
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THE HISTOLOGICAL ANALYSIS OF OOGENESIS AND MATURITY OF ANTARCTIC TOOTHFISH FROM THE ROSS SEA
Abstract: The results of the histological analysis of the Antarctic toothfish (Dissostichus ... morphological parameters, indices of gonads and condition by Fulton have been described. The histological ... criteria of the assessment of the ovary maturity stages, cytological parameters of oocytes and type of the ... toothfish oogenesis have been determined. At the maturing of toothfish, ovaries from the stages III to IV ...
Meeting Document : WG-FSA-09/26 : Autor(es): S.V. Piyanova and A.F. Petrov (Russia)
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Fishes caught along with the Antarctic krill in the vicinity of the South Georgia Island during the austral winter months of 1992
Abstract: Observations on abundance of by-catch fishes were made during the austral winter months ... of 1992 (from July 9 to August 3) on board F/V No.3 and No.5 Chiyo Maru in the vicinity of the South ... Georgia Island. Among 74 net hauls examined, a total of 66 specimens of fishes belonging to 3 species were ... (62 specimens; 93.9% in number; 58.9% of total weight of by-catch fish). Standard length (SL) of L ...
Meeting Document : WG-KRILL-93/51 : Autor(es): T. Iwami (Japan)
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Considerations on the design and evaluation of surveys for estimating recruitment of Patagonian toothfish (Dissostichus eleginoides) with preliminary outcomes for the Heard Island plateau region (Division 58.5.2)
Abstract: Assessments of long-term sustainable yield using the Generalised Yield Model and the ... setting of total allowable catches (TAC) for Patagonian Toothfish, Dissostichus eleginoides, for the Heard ... design for Division 58.5.2 is reviewed and estimates of optimal distribution of trawl stations among ... strata provided for estimates of abundance of individual pre-recruitment age classes and total abundance ...
Meeting Document : WG-FSA-SAM-04/19 : Autor(es): Candy, S., Constable, A.J., Davies, C.R.
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Model-based mapping of assemblages for ecology and conservation management: A case study of demersal fish on the Kerguelen Plateau
of Common Profile (RCP) to quantify and map the distribution of demersal fish assemblages in an ... ecologically significant region of the Southern Ocean to a) gain ecological and management insights and b ... ) evaluate the utility of the new method for ecoregionalisation. The RCP approach is a multi-species, model ... -based approach that can overcome many limitations of traditional distance-based approaches. It ...
Meeting Document : WS-SM-18/P02 : Autor(es): N.A. Hill, S.D. Foster, G. Duhamel, D. Welsford, P. Koubbi and C.R. Johnson
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SELECTIVITY OF CONVENTIONAL AND CONTINUOUS TECHNIQUES OF KRILL FISHERY
Abstract: Combination of conventional and continuous techniques during krill fishery at the ... Russian commercial vessel "Maxim Starostin" allowed to compare the size structure of the ... Antarctic krill (Euphausia superba) caught by these two techniques. Results of comparison are discussed in ... relation to the selectivity of fishing gears and the space-time variability of krill. Differences between ...
Meeting Document : WG-EMM-11/14 : Autor(es): D. Sologub (Russia)